Comparison Between Two Endotracheal Tube Cuff Inflation Methods

This study is a prospective randomized controlled trial, the primary aim of this study to compare the intracuff pressure which is performed by 2 inflation methods. ( study in pediatric patients 4-12 year old) Group1 : Flow -Volume Loop-guided cuff inflation Group2 : Stethoscope-guided cuff inflation Our hypothesis is Flow-Volume Loop-guided cuff pressure will be lower than Stethoscope-guided cuff pressure. This study also collect the incidence of common post-extubation respiratory adverse events coughing, hoarseness, stridor, croup as an secondary outcomes.